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MC • Karl Dungs

, Inc.

 • EMP-5 • Edition 2017.05 • P/N 261483

Operation Description

The actuator’s position is proportional to the input current 

from the primary controller. The current-to-position convertor 

is a solid state switching device attached to the side of the 

die cast housing and receives its feedback signal from the 

built in potentiometer in the actuator with a wiper arm driven 

by the output shaft.

The signal input is factory set from 4 - 20 mADC, (but is field 

adjustable). The deadband is also adjustable. Deadband is the 

difference between the input signal, which will drive the motor 

one way, and the level, which will drive it the opposite way.

All wiring must comply with local electrical 

codes, ordinances and regulations .

Three adjustments are possible:

1) degree of counterclockwise travel.

2) the point of auxiliary switch actuation.

3) on the EMP 424-5 and EMP 454-5 models, the ability to 

slow the normal travel time by approximately 10 times.

Installation

Inspect unit before installing, look for broken parts or leaks. 

Use NEMA Type 4 compatible type connectors.

Observe the barrier that separates the line voltage terminals 

from the low voltage which operates the actuator motor. All 

connections to the line voltage side of the barrier (L1 and L2, 

1, 5 and 6 terminals) must be made with Class 1 wiring; con-

nections to the remaining terminals can be Class 2 thermostat 

cable if desired.

Allow 6 inches (152 mm) clearance above the actuator wiring 

compartment.

Do not adjust the limit switch beyond 90° unless the standard 

slidewire has been replaced with a 180° slidewire; do not 

adjust beyond 180° for proportioning control.

In some applications, a Flame Safeguard (FSG) may have 

one or two overriding circuits. One being a low fire purge start 

and the other a hight fire pre-purage. The function of the violet/

white and violet wires are to provide an electrical connection 

so that the FSG can override, the temperatur controller and 

drive the air damper actuator without a 4 mA signal. If such 

connections are not needed in the application, simply tape 

them off, and safely stow away.

Replacing EMP-3 or EMP-4 with EMP-5

•  When replacing an EMP-3 or EMP-4 with an EMP-5 

and

 

if the high fire override is not used, then follow the wiring 

schematic ”

EMP-4 to EMP-5 without using high fire 

override

” for the low voltage input leads.

•  When replacing an EMP-3 or EMP-4 with an EMP-5 

and

 if 

the high fire override is used, then follow the wiring sche

-

matic ”

EMP-4 to EMP-5 using high fire override

” for the 

low voltage input leads so that the EMP-5 drives closed with 

a low fire override input and open with a high fire override 

input from the flame safety.

•  When replacing an EMP-3 with an EMP-5, there is no need 

to connect to the “run” terminal of the flame safety.

• Red wire on EMP-3 is replaced with violet/white wire on 

EMP-5, which must be connected to the LOW terminal on 

the flame safety and the - lead on the temperature control

-

ler. See schematic below.

•  Blue wire on EMP-3 is replaced with blue wire on EMP-5.

• Orange wire on EMP-3 is replaced with yellow wire on 

EMP-5.

•  When replacing an EMP-4 with an EMP-5, follow the wiring 

schematic below for the low voltage input leads so that the 

EMP-5 drives closed with a low fire override input and open 

with a high-fire override input from the flame safety.

•  When replacing an EMP-4 with an EMP-5, there is no need 

to connect to the “run” terminal.

•  White wire on EMP-4 is replaced with violet / white wire on 

EMP-5, which must be connected to the LOW terminal on 

the flame safety and the - lead on the temperature control

-

ler. See schematic below.

•  Black wire on EMP-4 is replaced with blue wire on EMP-5.

•  Red wire on EMP-4 is replaced with yellow wire on EMP-5.


+

Typical Flame Safety Inputs


COM

High

Low Run 

135 Ohm 
Potentiometer

B

W

R

+

Red

4-20mA
 Output

Temperature controller or 
Transducer with 24Vdc outlet power

EMP-4 low voltage 
input leads

White

Black

+

-

-

Typical Flame Safety Inputs

COM

High

Low Run

Wire nut

EMP-5 low voltage 

input leads

Violet/ 

White

Violet

Blue

Yellow

+

4 - 20 mA

Output

135 Ohm

Potentiometer

B

R

W

Temperature controller or

Transducer with 24 VDC outlet power

+

Typical Flame Safety Inputs

COM

High

Low Run

EMP-5 low voltage 

input leads

Violet/ 

White

Violet

Blue

Yellow

+

4 - 20 mA

Output

135 Ohm

Potentiometer

B

R

W

Temperature controller or

Transducer with 24 VDC outlet power

EMP-4 to EMP-5 

without using 

high fire override

EMP-4 to EMP-5 

using high fire

override

EMP-5 is not a di-

rect replacement in 

this case. Additional 

wires detailed here 

are needed.

Содержание EMP-5

Страница 1: ...n be foreinstallingoroperating Keep theinstructioninasafeplace You find the instruction also at www dungs com If these instructions are not heeded the result may be personal injury or damage to proper...

Страница 2: ...ning 34 8 A locked rotor Grounded Input Grounding either or both input wires will not cause Fuse There is no internal fuse The EMP is impedence protected Model No Order No Travel Description Timing se...

Страница 3: ...e them off and safely stow away Replacing EMP 3 or EMP 4 with EMP 5 When replacing an EMP 3 or EMP 4 with an EMP 5 and if the high fire override is not used then follow the wiring schematic EMP 4 to E...

Страница 4: ...oltage to terminals input leads or to X 2 3 4 7 or 8 will permanently damage the motor Field Wiring Terminal Block Internal Wiring Low Voltage Leads for Driving Actuator 4 20 mAdc Controller Input Sli...

Страница 5: ...wise end of actuator rotation Each click of the cam represents about 3 change in operating point NOTE After turning the disc remove back plate and reposition the wiper it will need to be repositioned...

Страница 6: ...e mA input equals the desired finish point maximum position This is typically 20 mA 3 With the desired current input for maximum position typi cally 20mA the actuator will drive towards 90 degrees Onc...

Страница 7: ...ading windings The voltage on the shading windings is about 30 VAC and the voltage on the main windings is 120 VAC Tech Tip 2 Maximum voltage to terminals 7 and 8 is 24 VAC During operation the voltag...

Страница 8: ...7 05 P N 261483 Mounting holes 3 17 64 6 7 mm Dia 3 1 4 83 mm 4 3 4 121 mm 4 102 mm Shaft Dia 1 2 13 mm 2 1 4 57 mm 1 5 8 41 mm 2 1 4 57 mm 4 102 mm 2 51 mm 1 8 3 mm 7 1 4 184 mm 2 3 4 70 mm 2 1 4 57...

Страница 9: ...267191 AE 504 Paralleling Relay for driving up to 3 actuators with one input signal 269237 AM 132 5 16 hole ball joint linkage swivel connector for non parallel linking 269232 AM 122 5 16 hole straigh...

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